Dual-Speed 2" Crayford Focuser for Sky-Watcher Refractors | First Light Optics
Focuser upgrade : r/AskAstrophotography
Telescope House - Revelation Focuser Sale! - Upgrade your SCT, Newtonian or Refractor Focuser with one of the Revelation range of Crayford and Low Profile R&P Dual Speed Focusers...https://mailchi.mp/telescopehouse/revelation-focuser-sale | Facebook